tube frame is a turn off, just not impressed.
Speed channel series with the audi A4's, bmw, mazda 5 is closer to production cars, wish that series would take off like nascar.

You will want to watch the Continental Tire Sports Car Series. Basically road cars with minor modifications. They have fields over 60 cars. They are best sports car racing going in the US. Turner has a two car team in Continental Tire also, along with Fall Line and others running the M3 with the S65 motor.

The Speed World Challenge series is dieing. They keep losing manufacturers and teams every year. It use to be on Speed Channel, but is now on VS Channel and called World Challenge.